grimm



(ModeL) 2Sheets-Sheet1.

. A. C. F. GRIMM.

CURTAIN FIXTURE. No. 330,579. Patented Nov. 17, 1885.

WIN/588% min/r03 7 01716 Mfiw N. PETERS. Pholo-Wograpber, wnhmmm In:

V N PETERS, PhomLilhogmphu. Washinzkm. D. C.

(ModeL) 2 Sheets-Sheet 2.

A. G. F. GRIMM.

CURTAIN FIXTURE.

No. 330,579. Patented 'Nov. 17, 1885.

Wifnesses:

NiTE

ALBERT O. F. GRIMM,

CURTAIN- A'rnNr rrrcn.

on NEW YORK, N. Y.

FIXTURE.

SPECIFICATION forming part of Letters Patent No. 330,579,dated November 17, 1885.

Application filed July 31,1885. Serial No. 173,143.

To all whom it may concern:

Be it known that I, ALBERT 0. F. GRIMM, a citizen'of the United States, residing at New York, in the county and State of New York, have invented a new and useful Improvement in Curtain-Fixtures, of which the following is a specification.

My invention relates to an improvement in curtain fixtures wherein the curtain-roller is held at certain points, in raising or lowering a curtain, by means of a spring and other devices connected with a window-frame and the said roller; and it consists in adouble spring having the two sections arranged in a case separated by a disk, so that one section is wound up continuously with the winding of the other section, and thus a longer and more effective spring is secured; also, in a cam on the face of the case to engage a drop-catch working on an arbor connecting the roller and the fixture, substantially as hereinafter set forth, reference being had to the accompanying drawings, making part of this specification, in which Figure 1 is a front elevation showing the general relation of the parts. Fig. 2 isacrosssection of Fig. 1 on a line as x, and shows one section of the spring having an end secured to the arbor and the other end coupled with the other section of the spring. Fig. 3 is a cross-section from the reverse side of Fig. 1 on a line 12 '0, and shows the terminating end of the other section of the spring secured to a hub integral with the case. Figs. 4c, 5, 6, 7 are detailed views. Fig. 8 is a vertical longitudinal section through the couplinglinks and the spindle of the roller.

In my construction A is a case adapted to be secured to a window-frame, B, in any suitable way. This case is made to contain a double spring, CD, for operating the roller R, carrying a curtain, c. The two sections of the spring are coiled side by side with a disk, E, loose on the arbor between them, keeping them separate. The arbor F passes through the center of the case andthrough the springs,and the end G of the spring-section O on the side toward the roller is secured to this arbor, (see Fig. 2,) and the spring is coiled up until the outer end, H, reaches the edge of the case or a ring, 1', inside the case. There it is united, by means of the strip or coupling I, to the end of (ModeL) springsection D, made to coil on the opposite side of the disk. (See Figs. 1 and 3.) This section of the spring coiled in the case has the inner end secured to a hub, J, which is integral with the case, (see Fig. 3,) and through this hub the arbor passes.

To wind up the spring, the arbor is turned until the section 0 is coiled, and then continued turning will wind up the section D, the coupling I being drawn in toward the arbor in the notch A (see Figs. 2 and 3) in the disk until this section is coiled, and the two sections in conjunction have double thelength of action obtained by one spring filling the case, which in curtain-rollers is of much importance, providing a longer tension than would otherwise be the case. On the side of the case toward the roller is secured a cam, K, having the shoulder b,for engaging a point, M, of a dropcatch, L, placed, by means of a slot, N, on a square portion of the arbor, and it is held in position on the arbor, keeping the upper end, as shown, in loose contact with the side of the case, and the lower end the same with the side of the cam by means of a washer, O, and pin P. When the springs have been wound up, the end Q of the arbor, being made square or rectangular, is inserted in the end of the roller, when it is ready for use. Then in taking hold of the curtain 0, and loosening the catch, and letting the curtain run up slowly, the point M of the catch will be engaged by the shoulderb of the cam, and the curtain will be latched at every turn of the roller; or there may be more points on the catch, and the latching will then be more frequent; but in letting the curtain run up quickly the point M will not have time to be engaged by the shoulder, and the curtain may be wholly run up at once.

The ring 0 in the case is needed to prevent the friction of the springs in contact with the case. The ring being loose will turn with the springs, the disk E also turning with the ring.

These fixtures are adapted to any variety of places or curtains, and form a very simple and effective means for adjusting the curtain to any desirable point of elevation.

I am aware of the patent of Buckley and Sawyer,'No. 219,386, September 9, 1879.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The case A, adapted to be secured to a window-frame and carrying the double springs O D, united at their outer ends by the coupling I, and separated by the disk E, provided with the notch A, and said springs in their inner ends united, respectively, one by means of the hub J to the case and the other to the arbor, said arbor also forming a connection with a curtain-roller, R, substantially as and for the purpose specified.

2. The spring 0 D, coiled in the case A, substantially as set forth, in combination with the ring 1-, as set forth.

3. The cam K, provided with the shoulder 11 and secured to the case A, said case carrying the double spring (3 D, substantially as ing, all substantially as and for the purpose specified.

ALBERT O. F. GRIMM. Witnesses:

HORACE HARRIS, MATTHEW F. GRIMM. 

